The Stability Analysis And Safety Precautions Research Of Red Mud Embankment For Shandong Aluminium Corporation

As an important production facility in mine, tailing pond is a complicated man-made system, for the close relationship between its safe and effective operation and the safety of beings or belongings and environment in its surrounding. So, to ensure the sustainable development of the production of mine, the safety of tailing pond should be especially thought much of. In this paper, based on red mud embankment in Shandong Aluminium Corporation, stability analysis and safety precautions research were performed, in allusion to the ubiquitous safety problems in tailing pond of home, to offer theoretic guidance and actual assistance to the corporations of mine with the same safety problems.This paper analyses the physical and mechanical characteristics of red mud embankment of Shandong Aluminium Corporation, the intension of red mud configuration, the mechanism of dam and the sediment rules of red mud in the embankment. Rheological analysis of embankment was performed based on the consolidation tests of red mud and the observation of the deformation of embankment.The seepage field at the elevation of 75m and 95m of Red mud embankment were performed with AutobankV5.1.The results of saturation line plot, isobaric line plot, isopotential line plot and the likely destroyed zone plot by seepage flow could give due cause in judging that the red mud embankment could be liable for seepage failure.Static calculations at the elevation of 75m and 95m of red mud embankment were performed with AutobankV5.1. The results of the elevation of 75m without penetration force and the elevation of 95m with penetration force were analyzed contrastively. And the changes of the stress and the displacement with space and time were calculated respectively.Dynamic stability calculation at the 95m elevation of red mud embankment was performed with Flac5.0, and the results indicate that a large area of plasticity zone appears in red mud embankment subjected to seismic load, and the displacement in dam is larger than other areas', the maximum displacement can reach 400 mm, especially in the middle of embankment it can reach 500 mm. So, destroyable slippage will appears in some partial zones subjected to seismic load.The main risk factors in the red mud embankment system were analyzed. A fault analysis model was created using the fault tree analysis method to judge the possibility and the severity of the fault of the system, and the instable probability of top event was calculated approximately in the occurring probability of bottom event. Measures to prevent the most harmful issues for the safety of the embankment are included.